Improvement in boring and mortising-machine



` iniitd statte entre one.

JOHN HUMPHREY, OF RAVENNA, OHIO.

Letters Patent No. 98,265, dated December 2S, 1869.

The Schedule referred to in these Letters Patent and making part of thesarna.

To all whom tt may concern Be it known that I, .Tous HUMPnnnY, ofRavenna, in the county of Porta-ge, State of Ohio, have invented certainnew and useful Improvements in Boring and Mortisinr-Machines; and I dohereby declare that the following is a full and complete description ofthe same,

reference being had to the accompanying drawings, making a part of thisspecification, in which- Figure his a side vie w of the machine.l

Figure 2, a view of the top.

Figure 3, a view of the rear side.

Figure 4, a side view.

Figure 5, a detachedsection.

Like letters of reference refer to like parts several views presented.

lhis invention relates to a boring and mortisingmachine, the angersorbits of which, whereby the boring is done, being driven by a screwoperating directly upon the shauks ot' the angers, said angers beingarranged within the chiscls, whereby the niortising is done, ashereinafter more fully described.

It further relates to the construction of the boring tools, and thearrangementof the devices whereby thel boring and mortising-tools areadjusted and held` and in the arrangement of the devices foradjustingthc table which sustains the pieceA that is to be bored andmortised.

Angers or boring-instruments have been revolved by means of arevolvingscrew,working in a pinion upon the shaft or shank of the boring-tool,but where very small boring-bits or angers are used, it is necessary t-ohave the shank of the same, in order to secure the proper strength, ot'nearly the same size in diameter as the hole, that the bit or auger maybore. (lonsequcntly a pinion having inclined teeth, and ofgreaterdiameter than the shank ofthe auger, could not be placed around theshank of the boring-tool, for it is intended that the boring-tool willbore away all, or nearly all the wood within the length of the mortise,and they must run close together, and there will be no in the room forthe insertion ot a pinion on the shank by which to revolve the tool,while in this inventioi'i the angers are driven by the revolvingscrewwhen the Shanks of the boring-tools occupy all, or nearly all the.space in the length ofthe mortise, and no piuions are or can be usedupon the Shanks of such bits or angers, by which construction very muchsmaller boring-tools can be. used than by any otherrknown constructionor arrangement of devices, and at the same time the boring-tool has ahigher velocit-y than can be given to it by means of a pinion, whichadds much to its perfection in thenperatiou ot' boring.

1n tlg. 4, A represents one end or side of a frame, in which the devicesforboring and mortising areal.'- ranged.

G is the case or frame which contains the angers, in which the angersrevolve, and to which the hollow chisels B C arcattaehed, and aresecured to'thetransverse guidesor slides Dby means of the set-screws F,whereby said clalnps and chisels may be adjusted upon the slides, as thenature of the work may require.

Withinl said chisels arc arranged the angers or bits n, iig. 5, asection of the chisel being broken away in s order that they maybe seen.Said angers may be more or less in number, according to the length ofthemortise to be cut, and which, as will be observed, are placed close toeach other, so that the holes thereby made willhave but little wood leftbetween them to be cut out or away bythe chisels.- f

Within and between the transverse slides D is a screw, G, which is soarranged, in relation to the bits contained within the chisels, that thethreads thereof tit and run in correspoinling grooves c, fig. 5, cut inthe stem or shaft of the augers,-and whereby said angers are made torevolve, as motion is given to the screw by the pulley Hbeltcd to andoperated by an appropriate arrangement of mechanism.

I figs. l and 4, is an adjustable table situate between the chisels, andwheroon is luid the work for boring and mortising.

Said' table is moved upward and downward by means of the screws J,actuated by the bevel-wheels K, which are made to engage in the pinionsL, secured to the shaft M, and which is thrown into and out of gear withthe driving-wheel N by means of the piuions O, loosely fitted to theshaft, and made to engage with the clutch l, said clutch being looselyfit-ted and feathered to the shaft, and moved into and ont ot'engagement with the side-wheels O, for operating the same,

by the lever Q, extending `upward from the clutchto thc top of themachine, where it may be operated by the hand, a handle, It, beingprovided for that purpose.

Having thus described the construction and arrangement oft-lic machine,the practical operation ot' the same is as follows, viz:

This machine is designed more especially for mor` tising door andwindow-sash stuff, which', when used for doors, two sets of angers andchiscls B'O are used conjointly. A

lt will be observed that said chisels are of different width, the upperset B being wider than the lower setv C, the purpose of which is thatthe mortises beaten in the door-stuit' require to be wider or longer oirone side than on the other, to allow of the tenon being keyed in themortise.

The' timber or stuff to be operated on is laid upon thetable,,hnmcdiately under the chisels, and thereon l rmly secured by thejam S, which isforced against the stuff'by means of the'cams T, tig. 2.

Motion is now given to the angers by means of the screw above described,actuated by an arrangement of pulleys provided t'orthat purpose. Thetable is now moved upward by the screws J, actuated by the gearing K, L,and N, by throwing them into gear by the clutch P.

The timber, as it is being bored, is also cut into a `to that cut bythose above, thereby completing` the mortise, which will be longeron theupper side than on `the lower one, in consequence of the difference in pthe width 'of the chisels.

l The reverse movement of the table may be effected by the operator, bymeans of the lever Q, or it may be operated byl the table, independentlyot'thepcrson using the machine, by allowing the arm U to come in con'-tact with the arm A' ot' the lever Q, at the required time for shittingthc clutch. v

By the use ot'a screw for operating the angers, said angels can bearranged close to each other, thereby boringaway most ofthe wood for themortise, so that the chisels will have much less to cnt in ibi-ming themortise than if the holes were bored distant from eachl other, whichthey must be when driven by means of a belt and pulley Vin the ordinaryway.

Angers thus operated by a screw can be used in cutting very smallmorlises; but asordinarily cut in a a and chisels B C, when all theparts are constructed and arranged to operate in the manner and for thepurpose described.

3. The combination of the screw G, auger or series and arranged withrelation to each other, and operat ing in the manner and for the purposesubstantially as described.

4. The combination of the chisels B C, having boringangers a, clamps 19transverse slides D, with tbe table I, jam S, and cam T, all constructedand arranged to operate substantially as described. p

5. The combination of the lever Q, clutch P, and table I,whcn arrangedto operate substantially in the manner and for the purpose described.

JOHN HUMPHREY.

Witnesses:

J. H. Beinamen, D. L. HUMPHREY.

2. The automatic reciprocating table I, in combination with the upperand lower series of boring-angers of angers a, with the chisels B O,when constructed

